- Joined
- Mar 17, 2009
- Messages
- 3,626
- Reaction score
- 111
- Points
- 63
- Your Mac's Specs
- 2018 15" MBP, 2019 11" iPad Pro, iPhone 11 Pro
Leopard (10.5) should run you around 129+, and as said Snow Leopard (10.6, which they say wouldn't work on a G5 I think was $29). The Apple guy probably meant Leopard because any OS above and current is not meant for PPCs.
The "Apple guy" meant SL. He was going off the assumption it was an Intel iMac capable of SL and he was referring to the SL box set, which is recommended (but not required) for a jump from Tiger to SL.
Not being picky, but thought I should clear that up because of the OS confusion here and the OP being so new to Macs.